:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --text-light: #777;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    color: var(--text-color);
    line-height: 1.6;
    background-color: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: white;
    color: white;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    padding: 5px 10px;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 600;
    color: black;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

nav ul li a {
    color: black;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--secondary-color);
}

/* 主导航菜单样式 */
.main-navigation {
    background-color: transparent; /* 移除导航栏的全局背景色 */
    box-shadow: none; /* 移除全局阴影 */
    position: sticky;
    top: 0;
    z-index: 99;
}

.main-navigation .container {
    display: flex;
    justify-content: center;
    background-color: var(--primary-color); /* 将背景色移到容器 */
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); /* 将阴影移到容器 */
    max-width: 1200px; /* 确保容器有最大宽度 */
    margin: 0 auto; /* 居中容器 */
    border-radius: 0 0 8px 8px; /* 可选：添加底部圆角 */
}

.main-navigation ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-navigation ul li {
    margin: 0;
}

.main-navigation ul li a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    padding: 15px 20px;
    display: block;
    transition: all 0.3s;
    border-bottom: 3px solid transparent;
}

.main-navigation ul li a:hover {
    color: var(--secondary-color);
    background-color: rgba(255, 255, 255, 0.1);
    border-bottom-color: var(--secondary-color);
}

/* 滚动提示样式 */
.main-navigation .container.can-scroll::after {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 30px;
    background: linear-gradient(to right, transparent, var(--primary-color));
    pointer-events: none;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.main-navigation .container.can-scroll.user-scrolled::after,
.main-navigation .container.can-scroll:hover::after {
    opacity: 0;
}

/* 确保在移动端这些样式生效 */
@media (max-width: 768px) {
    .main-navigation .container {
        position: relative;
    }
}

/* 主导航菜单样式 - 小屏幕优化 */
@media (max-width: 768px) {
    .main-navigation .container {
        justify-content: flex-start;
        overflow-x: auto; /* 允许水平滚动 */
        -webkit-overflow-scrolling: touch; /* iOS平滑滚动 */
        white-space: nowrap; /* 防止菜单项换行 */
        padding: 0 15px;
        scrollbar-width: thin; /* Firefox细滚动条 */
        scrollbar-color: rgba(255, 255, 255, 0.3) rgba(255, 255, 255, 0.1); /* Firefox滚动条颜色 */
    }
    
    .main-navigation ul {
        flex-wrap: nowrap;
        white-space: nowrap;
        padding-bottom: 8px; /* 为滚动条留出空间 */
        margin-bottom: 0;
    }
    
    .main-navigation ul li {
        display: inline-block;
        flex-shrink: 0; /* 防止菜单项被压缩 */
        margin: 0;
    }
    
    .main-navigation ul li a {
        padding: 12px 15px;
        font-size: 0.9rem;
        white-space: nowrap;
        border-bottom: 3px solid transparent;
        transition: all 0.3s ease;
    }
    
    .main-navigation ul li a:hover {
        color: var(--secondary-color);
        background-color: rgba(255, 255, 255, 0.1);
        border-bottom-color: var(--secondary-color);
    }
    
    /* Webkit浏览器滚动条样式 (Chrome, Safari, Edge) */
    .main-navigation .container::-webkit-scrollbar {
        height: 6px;
    }
    
    .main-navigation .container::-webkit-scrollbar-track {
        background: rgba(255, 255, 255, 0.1);
        border-radius: 3px;
        margin: 0 10px;
    }
    
    .main-navigation .container::-webkit-scrollbar-thumb {
        background: rgba(255, 255, 255, 0.3);
        border-radius: 3px;
    }
    
    .main-navigation .container::-webkit-scrollbar-thumb:hover {
        background: rgba(255, 255, 255, 0.5);
    }
    
    /* 隐藏滚动条直到悬停或激活 */
    .main-navigation .container {
        scrollbar-width: none; /* Firefox隐藏滚动条 */
    }
    
    .main-navigation .container::-webkit-scrollbar {
        display: none; /* Webkit浏览器隐藏滚动条 */
    }
    
    .main-navigation .container:hover,
    .main-navigation .container:active,
    .main-navigation .container:focus {
        scrollbar-width: thin; /* Firefox显示滚动条 */
    }
    
    .main-navigation .container:hover::-webkit-scrollbar,
    .main-navigation .container:active::-webkit-scrollbar,
    .main-navigation .container:focus::-webkit-scrollbar {
        display: block; /* Webkit浏览器显示滚动条 */
    }
}

/* 超小屏幕设备进一步优化 */
@media (max-width: 480px) {
    .main-navigation .container {
        padding: 0 10px;
    }
    
    .main-navigation ul li a {
        padding: 10px 12px;
        font-size: 0.85rem;
    }
    
    .main-navigation ul {
        padding-bottom: 6px;
    }
}

/* 中等屏幕调整（平板等） */
@media (min-width: 769px) and (max-width: 1024px) {
    .main-navigation .container {
        padding: 0 15px;
    }
    
    .main-navigation ul li a {
        padding: 15px 18px;
        font-size: 0.95rem;
    }
}



/* 英雄区域样式 */
.hero {
    padding: 60px 0;
    background: white;
    color: white;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.hero-top {
    margin-bottom: 30px;
}

.profile-image {
    width: 200px;
    height: 250px;
    margin: 0 auto 20px;
    border-radius: 0; /* 完全直角 */
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}
.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-name {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0;
    color: black;
}

.hero-bottom {
    width: 100%;
}

.hero-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: black;
    text-align: justify;
    width: 100%;
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero {
        padding: 40px 0;
    }
    
    .profile-image {
        width: 150px;
        height: 150px;
    }
    
    .profile-name {
        font-size: 1.6rem;
    }
    
    .hero-intro {
        font-size: 1rem;
        text-align: left;
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .profile-image {
        width: 120px;
        height: 120px;
    }
    
    .profile-name {
        font-size: 1.4rem;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
}

/* 内容区域样式 */
.section {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: 40px;
    text-align: center;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 15px auto;
    border-radius: 2px;
}

/* 奖励和出版物样式 */
.awards, .publications {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    padding: 30px;
    margin-bottom: 40px;
}

.awards-list, .publications-list {
    list-style: none;
}

.awards-list li, .publications-list li {
    margin-bottom: 15px;
    padding-left: 20px;
    position: relative;
}

.awards-list li::before, .publications-list li::before {
    content: '•';
    color: var(--secondary-color);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.publication-item {
    margin-bottom: 20px;
}

.publication-category {
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 1.1rem;
}


/* 页脚样式 */
footer {
    background-color: #2c3e50; /* 灰黑色背景 */
    color: white; /* 白色字体 */
    padding: 20px 0; /* 调整内边距 */
    width: 100%; /* 确保页脚占据全宽 */
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 0 auto; /* 居中内容 */
    padding: 0 20px; /* 添加左右内边距 */
}

.visitor-info, .copyright {
    font-size: 0.9rem;
    color: #ecf0f1; /* 浅白色字体，提高可读性 */
}

/* 蓝色字体样式 */
.footer-blue {
    color: #3498db; /* 使用主题中的蓝色 */
    font-weight: 500;
}

/* 备案信息链接样式 */
.copyright a.footer-blue {
    text-decoration: none;
    transition: color 0.3s;
}

.copyright a.footer-blue:hover {
    color: #2980b9; /* 悬停时使用深一点的蓝色 */
    text-decoration: underline;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}


/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    transition: all 0.3s;
    z-index: 1000;
    display: none;
}

.back-to-top:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        text-align: center;
    }
    
    nav ul {
        margin-top: 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 5px 10px;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}